Carburetor



March N. 192% lg@ A. L. POWELL CARBURETOR Original Filed Feb. 2, 1921 SMQ/11160@ Patented Mar. ilil, i924.

,UNITE SATS QFFHCE.

ALVAH L. POWELL, OF MILES CITY, MONTANA, ASSIGNOR T THE A. L. POWELL POWER CO., INC., 0F MILES CITY, MONTANA, A BODY CORPORATE.

CARBURETOR.

Application led February 2, 1921, Serial No. 441,982. Renewed August 17, 1923.

To all whom t may concern.'

Be it known that I, ALVAH L. POWELL, a citizen of the United States, residing at Miles City, in the county of Custer and State of Montana, have invented certain new. and useful Improvements in Carburetors, of which the following is a specification.

My invention relates `to improvements in carburetors in which I utilize the heat of air, independently compressed for the combustion chamber, for vaporizing the fuel and for firing the same. In the annexed drawings Ishow a form of my improvement, and modifications thereof.

Fig. l is an elevation, in section, of my improvement.

Figs. 2 and 3 are similar views, showing modifications of the invention.

Figs. 4 and `5 are diagrams of the cycles.

In Fig. l, an internal combustion engine, A, is shown, with piston A1, and operable inlet valves A2,'A3, and an exhaust valve, A4. From valve A2 a pipe passes to a coil, A5, in a chamber, A9. The coil A5 communicates with an air compressor, A6, as shown. From head of chamber A9 a pipe, A7, communicates with operable valve A3. An inlet pipe, AS, leads to a fuel supply, not shown.

At a point on the return stroke of piston A1, valve A3 opens and a fuel charge enters cylinder from the chamber A9. This fuel has been vaporized by the heat radiating from the coils A5, due to the high compression of the contained air. stroke, at a point a on diagram, Fig. 4, valve A2 opens and a charge of highly compressed air is admitted. Valve A2 closes at a point b on diagram, Fig. 4:. By reason of the temperature of the intaken air, this temperature being due to its own compression in the compressor A6, the total charge is tired. On outstroke, power is developed.

On succeeding On next upstroke engine exhausts. rlhe engine can be either two or four cycle but the latter is preferably used.

In Fig. 2 I show a modification of the revious construction.

In this the exhaust rom engine heats incoming air and fuel, respectively, in the coils B, B1. An air inlet valve, B2, 1s connected with a fuel needle valve, B3, by the stem B4.

pheric pressure stroke of engine,

Air at atmosis drawn in on suction and fuel enters at the same time, the said valves, B2, B3, acting together when moved by operable means.

Fig. 5, shows the Diagram, operative cycle.

In Fig. 3 the engine exhaust passes out through a coil, C, in a closed chamber, C1.

from any source.

rIhe chamber contains fuel that enters at C2 The exhaust heat vaporizes the fuel, which passes to the engine through pipe C3 and operable valve C4. Air for engine, already compressed, enters through operable valve, C5.

It is assumed that the temperature of the incoming air has been raised compression.

to ignition point by high What I believe is new and ask to have protected by Letters Patent is- In an internal combustion engine, the

combination of a power means, a power cylinder, a piston, operable intake and exhaust valves, an air compressor, a boiler, a coil in said boiler, communicating means from air compressor to said coil and to an operable valve on pow er cylinder, communicating pressed air from described.

In testimony nature.

said coil, substantially as whereof I aiiix my sig- ALV L. POWELL. 

